25009393 has 2 divisors, whose sum is σ = 25009394. Its totient is φ = 25009392.

The previous prime is 25009379. The next prime is 25009403. The reversal of 25009393 is 39390052.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17572864 + 7436529 = 4192^2 + 2727^2 .

It is a cyclic number.

It is not a de Polignac number, because 25009393 - 2⁹ = 25008881 is a prime.

It is not a weakly prime, because it can be changed into another prime (25009493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12504696 + 12504697.

It is an arithmetic number, because the mean of its divisors is an integer number (12504697).

Almost surely, 2^25009393 is an apocalyptic number.

It is an amenable number.

25009393 is a deficient number, since it is larger than the sum of its proper divisors (1).

25009393 is an equidigital number, since it uses as much as digits as its factorization.

25009393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7290, while the sum is 31.

The square root of 25009393 is about 5000.9392117881. The cubic root of 25009393 is about 292.4383896341.

The spelling of 25009393 in words is "twenty-five million, nine thousand, three hundred ninety-three".